Re: One 15/30 Vs two 15/30's

[Terry Fritz <twftesla-at-xxxxxxxxxx>]

Hi Seth,

At 07:31 PM 11/13/2000 +1300, you wrote:
>I have just bought two second hand 15kV 30mA NST's. This will be the
>first coil I have built and I would like some comparison of the expected
>output.
>
>Will two 15/30's give me double the spark length when compared to a
>single 15/30?

It will be about SQRT(2) = 1.4 times the length over just one.

>
>Will both designs (one NST vs two) use the same secondary former
>diameter? (I have a length of 110mm PVC pipe, but would not mind getting
>a larger one if it increased performance)

Probably the same former but one NST will have half the primary capacitance
and you will need twice the primary inductance to make up for it.

>
>Anyone who has built a coil using two 15/30's, I would be very
>interested to hear of your results.

Same as my 15/60:

http://hot-streamer-dot-com/TeslaCoils/MyCoils/BigCoil/BigCoil.htm

Cheers,

	Terry

>
>
>Thanks,
>Seth Fischer
>